{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SL6120-7","brand":"Siemens","brandSlug":"siemens","productSlug":"5SL6120-7","canonicalUrl":"https://aoctrl.com/siemens/5SL6120-7","factsUrl":"https://aoctrl.com/api/mcp/products/5SL6120-7","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SL6120-7, miniature circuit breaker, 1-pole, C characteristic, 20 A rated current, 6 kA breaking capacity per EN 60898, 230/400 V AC.","salesMarkdown":"The Siemens 5SL6120-7 is a SENTRON miniature circuit breaker (MCB) — one pole, C-curve, rated 20 A, with a 6 kA breaking capacity per both EN 60898 and IEC 60947-2. That 6 kA rating means it can safely interrupt a fault current up to 6,000 A without welding its contacts or cascading damage upstream. Occupies a single modular width unit (18 mm) on standard DIN rail, with a depth of 76 mm and an installed depth of 70 mm. That 18 mm width is the key dimension for panel fill — one pole, one slot, no surprises. IP20 with connected conductors; fine inside a closed enclosure, not for wet locations. Rated 20 A at 230/400 V AC, 50/60 Hz. The 6 kA breaking capacity is the same under both EN 60898 and IEC 60947-2 — no derating between the two standards for this part. Single-pole switching, so it protects one phase; for three-phase circuits you'd stack three units or move to a 3-pole variant. Power loss is 2.2 W per pole at rated current in hot operating state — negligible for thermal budgeting in a populated panel, but worth knowing if you're packing 40+ breakers into a sealed enclosure.","metaTitle":"Siemens 5SL6120-7 SENTRON MCB, 1P C 20A, 6kA","metaDescription":"Siemens 5SL6120-7 SENTRON miniature circuit breaker, 1-pole, C-curve, 20 A, 6 kA breaking capacity per EN 60898. Active production. Quoted to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Width":"18 mm","title":"5SL6120-7","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"Yes","description":"Miniature circuit breaker 230/400 V 6kA, 1-pole, C, 20 A","Halogen-Free":"Yes","Silicon-Free":"Yes","Design Of Pole":"1P","Number Of Poles":"1","lifecycle_stage":"current","Mounting Position":"any","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Degree Of Pollution":"2","Product Designation":"Miniature circuit breaker","protection class IP":"IP20, with connected conductors","Overvoltage Category":"III","Energy Limitation Class":"3","Suitability For Operation":"Residential buildings/infrastructure","at DC rated value maximum":"72 V","Number Of Modular Width Units":"1","Tripping Characteristic Class":"C","supply voltage at AC rated value":"400 V","according to EN 60898 rated value":"6 kA","according to IEC 60947-2 rated value":"6 kA","Type Of Voltage Of The Operating Voltage":"AC","with multi-phase operation at AC maximum":"440 V","Value Range Of The Supply Voltage Frequency":"50/60 Hz","with multi-phase operation at AC rated value":"440 V","with single-phase operation at AC rated value":"250 V","Mechanical Service Life (Operating Cycles) Typical":"10 000","Product Extension Installable Supplementary Devices":"Yes","power loss [W] for rated value of the current at AC in hot operating state per pole":"2.2 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.91","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e5562d13cec3f78d16b1ae750ea4f1d0.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=157535&mlfb=5SL6120-7"},"ai":{"faq":[{"question":"Where can I buy the 5SL6120-7?","answer":"Sourced and quoted to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time."},{"question":"What is the breaking capacity of the 5SL6120-7?","answer":"6 kA per both EN 60898 and IEC 60947-2 at 230/400 V AC."},{"question":"What is the width of the 5SL6120-7?","answer":"18 mm, which is one modular width unit on standard DIN rail."},{"question":"Will the 5SL6120-7 drop into a panel designed for the 5SL4363-7?","answer":"No — the 5SL4363-7 is a 3-pole unit occupying three modular width units (54 mm), while the 5SL6120-7 is a single-pole unit at 18 mm. The footprint and wiring differ; they are not direct drop-in replacements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SL6120-7","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/5SL6120-7 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}